With high school in particular that's the thing. Many will not change especially the ones that want to attend these things with any regularity. Just like the holidays I don't go all out because my feeling is that if I really want to stay in contact with you I'll stay in contact with you and visa versa. Just like I don't wait until new years to drink Sometimes you run into people in the street on the run that's one thing but people who attend these things are trying to maintain or capture a certain feeling/era or are board to death. Time to move on. It seems every 5 years some alum pounds with you notices of an up coming reunion(my guess they want to maintain or recapture that "lost" feeling) In a way, it's almost sad that some people just can't seem to move on.